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* [Intel-wired-lan] Ask some help for the performance of Intel 82599 on Linux 4.1.15
@ 2016-02-23 14:39 ` Ding Tianhong
  0 siblings, 0 replies; 2+ messages in thread
From: Ding Tianhong @ 2016-02-23 14:39 UTC (permalink / raw)
  To: intel-wired-lan

Hi Jeff:

I use the Intel 82599 to run benchmark on my machine, the kernel version is 4.1.15, and I found that
when I run a single iperf by one port, the speed looks fine, it could run to 9.45Gb/s, it looks good. 
the command is: iperf -c 15.1.1.1 -t 100 -i 1

But when I run double iperf by two port from one single 82599 card, it looks strange, the speed could
only up the 6Gb/s + 6Gb/s = 12Gb/s, the total speed is not twice as much than one port, I try to
modify some param for tcp windows, it looks no effect, can you give me more suggestion?

Thanks
Ding


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2016-02-23 14:39 [Intel-wired-lan] Ask some help for the performance of Intel 82599 on Linux 4.1.15 Ding Tianhong
2016-02-23 14:39 ` Ding Tianhong

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